64278841 has 16 divisors (see below), whose sum is σ = 72769536. Its totient is φ = 56250000.

The previous prime is 64278793. The next prime is 64278871. The reversal of 64278841 is 14887246.

It is a 8-Lehmer number, since φ(64278841) divides (64278841-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 64278841 - 2⁹ = 64278329 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64278794 and 64278803.

It is not an unprimeable number, because it can be changed into a prime (64278871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85216 + ... + 85966.

It is an arithmetic number, because the mean of its divisors is an integer number (4548096).

Almost surely, 2^64278841 is an apocalyptic number.

It is an amenable number.

64278841 is a deficient number, since it is larger than the sum of its proper divisors (8490695).

64278841 is a wasteful number, since it uses less digits than its factorization.

64278841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1044.

The product of its digits is 86016, while the sum is 40.

The square root of 64278841 is about 8017.4086212441. The cubic root of 64278841 is about 400.5800771197.

The spelling of 64278841 in words is "sixty-four million, two hundred seventy-eight thousand, eight hundred forty-one".